<template>
    <div class="validate-input-container pb-3">
        <input
            class="form-control"
            :class="{'is-invalid': inputRef.error}"
            :value="inputRef.val"
            @input="updateValue"
            @blur="validateInput"
            v-bind="$attrs"
        >
        <span
            v-if="inputRef.error"
            class="invalid-feedback"
        >{{inputRef.message}}</span>
    </div>
</template>

<script lang='ts'>

import { defineComponent, onMounted, PropType, reactive } from 'vue'
import { emitter } from './ValidateForm.vue'
const emailReg = /^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/
interface RuleProp{
    type: 'required'|'email'|'range';
    message: string;
}
export type RulesProp=RuleProp[]
export default defineComponent({
  props: {
    rules: Array as PropType<RulesProp>,
    modelValue: String
  },
  inheritAttrs: false,
  setup (props, context) {
    const inputRef = reactive({
      val: props.modelValue || '',
      error: false,
      message: ''
    })
    const updateValue = (e: KeyboardEvent) => {
      const targetValue = (e.target as HTMLInputElement).value
      inputRef.val = targetValue
      context.emit('update:modelValue', targetValue)
    }
    const validateInput = () => {
      if (props.rules) {
        const allPassed = props.rules.every(rule => {
          let passed = true
          inputRef.message = rule.message
          switch (rule.type) {
            case 'required':
              passed = (inputRef.val.trim() !== '')
              break
            case 'range':
              passed = (inputRef.val.length >= 6 && inputRef.val.length <= 15)
              break
            case 'email':
              passed = emailReg.test(inputRef.val)
              break
            default:
              break
          }
          return passed
        })
        inputRef.error = !allPassed
        return allPassed
      }
      return true
    }
    onMounted(() => {
      emitter.emit('form-item-created', validateInput)
    })
    return {
      inputRef,
      validateInput,
      updateValue
    }
  }
})
</script>

<style>
</style>
